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<html>
<head>
<link rel="stylesheet" type="text/css" href="Style.css">
</head>
<body>
<h1>Window functions</h1>
<div>
<h2>Noise Suppression (β<sub>Noise</sub>)</h2>
<div>
Every DFT bin gathers some amount of noise. The Noise Suppression characteristic of an analysis window indicates how well an analysis window suppresses noise.<br>
All Noise Suppression values are relative to that of the rectangular window. (So the rectangular window has a noise suppresion of 1).<br>
<br>
In short: Lower is better.<br>
</div>
<h2>Dynamic Range (DR)</h2>
<div>
Dynamic range indicates the ability to separate large spectral components from small (noise) components.<br>
<br>
In short: Higher is better.<br>
</div>
<h2>Analysis Windows</h2>
<div>
<div class="window">
<h2>Rectangular Window</h2>
<div class="windowContent">
β<sub>Noise</sub> = 1<br>
DR = 13.4dB<br>
</div>
</div>
<div class="window">
<h2>Bartlett Window</h2>
<div class="windowContent">
β<sub>Noise</sub> = 1.335<br>
DR = 26.3dB<br>
</div>
</div>
<div class="window">
<h2>Hann Window</h2>
<div class="windowContent">
β<sub>Noise</sub> = 1.5<br>
DR = 31.5dB<br>
</div>
</div>
<div class="window">
<h2>Hamming Window</h2>
<div class="windowContent">
β<sub>Noise</sub> = 1.36<br>
DR = 41.8dB<br>
</div>
</div>
<div class="window">
<h2>Blackman Window</h2>
<div class="windowContent">
β<sub>Noise</sub> = 1.727<br>
DR = 58.3dB<br>
</div>
</div>
<div class="window">
<h2>Flat Top Window</h2>
<div class="windowContent">
β<sub>Noise</sub> = 3.77<br>
DR = 69dB<br>
</div>
</div>
</div>
</body>
</html>